About your involute gears, you can create cycloids, epicycloids, hypocycloids and trochoids utilizing the same construction techniques with a circle and dividing a circle tangent to the curve. These are similar to manual drafting techniques with circles, squares and triangles.
You also have the ability with Insert, Curve, Helix Spiral to create a curve that follows archimedes spiral.
The key is to utilize construction geometry and sketch relations to develop the more complex curves.
I would utilize a configuration in a large assembly, change the complex tooth profiles to a simplified tooth profile.
By definition two mating gears with have one point of tangency, this will not work for physical dynamics. So you definitely need a simple tooth if you want to see how the gears will move.
If you have these complex profiles in another CAD system, import them. If you have excel spread sheets, you can create the profile by reading in x, y, z coordinate data to create the sketch.
As far as documentation, SW includes the online tutorials, but you have to check during installation to install these tutorials. They are very helpful. I also have 4 pdf files at
they cover simple parts, asme standards in the drawing template, large assembly drawing with configurations. The files are 50 - 100 pages but will give you an idea on how SW - works.